“She’s a significant character in the movie,” “Apocalypse” writer Simon Kinberg told EW of the threequel. “We ended ‘First Class’ with Charles having wiped portions of her memory of her experience with the X-Men. They are, essentially, strangers to her when she meets them.”

Apocalypse’s real name is En Sabah Nur, which translates to “the first one,” alluding to the fact that he is considered the first human born with the mutant-X gene. Given his ancient heritage, he is extremely powerful and considers himself a God.

“This movie is the completion of the first arcs of Charles, Eric, Raven and Hank, who are essentially our main characters,” he explains. “They’re such young actors and young characters, so there’s a lot more story to tell. But as a first phase of their lives, there is this feeling of closure by the end of the movie.”